Image: L. Farrell
Jon used to work for the British Antarctic Survey and was asked to step in and make ozone observations on this winter's trip, after a colleague resigned.
He set off on Monday and today we heard that he is enjoying temperatures of 30 degrees in Cape Town, where the team stopped off. Jon reports spotting some plants familiar to the UK, such as Common Rye-grass and Petty Spurge.
You can follow Jon's adventures here - there is also a link in the list (on the right) of blogs by BSBI members.
But rest assured that before he set off, Jon posted the programme of field meetings for 2018 - read the list with descriptions here or view a table of national and local meetings here.